# -*- coding: utf-8 -*-#
#-------------------------------------------------------------------------------
# 建立者:       王景渊  
# Name:         4.22
# Description:
# Author:       dell
# Date:         2019/ajaxdata.json/29
#-------------------------------------------------------------------------------
print('hello' * 5)
print([20]*10)
print([None]*6)
print([]*2)
#序列为空不能相乘

